<template>
  <div class="app-container">

  <!-- 顶部 Header 区域 -->
  <mt-header fixed title="黑马程序员.Vue项目">
		<span @click="goBack" slot="left"  v-show="flag">
			<mt-button icon="back">返回</mt-button>
		</span>
	</mt-header>

  <!-- 中间的 路由 router-view 区域 -->
	<transition>
			<router-view></router-view>
	</transition>
	

  <!-- 底部 Tabbar 区域 -->
  <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-xxf" to="/home">
				<span class="mui-icon mui-icon-email"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-xxf" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-xxf" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge">{{ $store.getters.getAllCount }}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-xxf" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>

  </div>
</template>

<script>
export default {
	data(){
		return {
			flag: false
		};
	},
	created(){
		this.flag = this.$route.path === "/home" ? false : true;
	},
	methods: {
		goBack(){
			// 点击后退
			this.$router.go(-1);
		}
	},
	watch: {
		"$route.path": function(newVal){
			if(newVal === "/home"){
				this.flag = false;
			}else{
				this.flag = true;
			}
		}
	}
}
</script>

<style lang="scss" scoped>
.mint-header{
	z-index: 99;
}
.app-container{
	padding-top: 40px;
	overflow-x: hidden;
	padding-bottom: 50px;
}
.v-enter{
	opacity:0;
	transform:translateX(100%);
}
.v-leave-to{
	opacity:0;
	transform:translateX(-100%);
	position: absolute;
}
.v-enter-active,
.v-leave-active{
	transition: all 0.5s ease;
}

// 该类名，解决 tabbar 点击无法切换的问题
.mui-bar-tab .mui-tab-item-xxf.mui-active {
    color: #007aff;
}

.mui-bar-tab .mui-tab-item-xxf {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}


.mui-bar-tab .mui-tab-item-xxf .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}

.mui-bar-tab .mui-tab-item-xxf .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>
